Use of hydrocodone bitartrate, a semisynthetic opioid, may result in the following:
- Respiratory depression
[see Warnings and Precautions (
5.2) and Overdosage (
10)]
- Drug dependence
[see Warnings and Precautions (
5.3)]
- Increased intracranial pressure
[see Warnings and Precautions (
5.4) and Overdosage (
10)]
- Decreased mental alertness with impaired mental and/or physical abilities
[see Warnings and Precautions (
5.5)]
- Paralytic ileus
[see Warnings and Precautions (
5.6)]
Use of chlorpheniramine, an antihistamine, may result in:
- Decreased mental alertness with impaired mental and/or physical abilities
[see Warnings and Precautions (
5.5)]
The following adverse reactions have been identified either during clinical trials of hydrocodone bitartrate and/or chlorpheniramine maleate or during their use post-approval. Because these reactions may be reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
The most common adverse reactions of hydrocodone bitartrate and chlorpheniramine maleate oral solution include: Sedation, somnolence, mental clouding, lethargy, impairment of mental and physical performance, anxiety, fear, dysphoria, dizziness, nausea, psychic dependence, mood changes; blurred, double, or other visual disturbances; confusion, headache, euphoria, facial dyskinesia, feeling faint, lightheadedness, agitation, irritability, tremor.
Other adverse reactions include:
Respiratory: Dryness of the pharynx and respiratory passages, occasional tightness of the chest, laryngismus, wheezing, or troubled breathing.
Gastrointestinal System: Nausea and vomiting (more frequent in ambulatory than in recumbent patients), constipation, abdominal distension, abdominal pain, acute pancreatitis, dry mouth, dyspepsia, epigastric distress, and/or loss of appetite.
Genitourinary System: Ureteral spasm, spasm of vesicle sphincters, urinary retention, dysuria, urinary frequency, urinary hesitancy.
Dermatological System: Skin rash, pruritus, erythema, urticaria, excessive perspiration.